Esempio


- 2 .
0 5 1
-4 1 6
-6 1 4
=
-2 .0 -2 .5 -2 .1
-2 .(-4) -2 .1 -2 .6
-2 .(-6) -2 .1 -2 .4

=
0 -10 -2
8 -2 -12
12 -2 -8